Radioisotope scanning of superior mediastinal masses.
D000368:Aged; D001014:Aortic Aneurysm / Q000175:diagnosis; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008297:Male; D008476:Mediastinal Cyst / Q000175:diagnosis*; D008477:Mediastinal Diseases / Q000175:diagnosis*; D008479:Mediastinal Neoplasms / Q000175:diagnosis*; D008722:Methods; D008875:Middle Aged; D011877:Radionuclide Imaging; D013959:Thyroid Diseases / Q000175:diagnosis